In depth email troubleshooting

Hello. I setup a Mail-in-a-box server for fun and testing but now i want to deploy it and actually attract users. Is there a way i can monitor accounts for suspicious, spam like activities?

MIAB was not built to be a public email system like GMAIL.

However, to point you in the right direction, you could get a spam filter to monitor outbound emails OR any application that can read Dovecot Maildir formatted emails.